ISO 18278-1:2004 recommends procedures for determining the generic weldability for resistance spot, seam and projection welding of metallic materials.This procedure is applicable for the assessment of the weldability of uncoated/coated steels, stainless steels and non-ferrous alloys such as aluminium, titanium, magnesium and nickel and their alloys of single thickness lower than or equal to 5 mm.The weldability of metallic materials in resistance welding is defined in terms of:the ability to make the weld in the first place;the ability to continue making welds;the ability of the weld to withstand the imposed service stresses.The procedures recommended in ISO 18278-1:2004 can be used to:compare the weldability of different metallic materials;compare the welding response of particular welding equipment and allow comparisons between different equipment and determine the influence of the static/dynamic properties of different welding equipment;determine the weldability of a material when any welding configuration is changed e.g. electrode material and/or shape, water cooling requirements etc.;investigate the effect of welding parameters such as welding current, weld time, electrode force or complex welding schedules including pulse welding, current stepping etc. on weldability.
ISO 18278-1:2004 recommends procedures for determining the generic weldability for resistance spot, seam and projection welding of metallic materials.
This procedure is applicable for the assessment of the weldability of uncoated/coated steels, stainless steels and non-ferrous alloys such as aluminium, titanium, magnesium and nickel and their alloys of single thickness lower than or equal to 5 mm.
The weldability of metallic materials in resistance welding is defined in terms of:
The procedures recommended in ISO 18278-1:2004 can be used to:
Le présent document définit des méthodes d'essais permettant la caractérisation de la soudabilité par résistance par points de produits plats revêtus ou non. Il précise les caractéristiques de l'équipement nécessaire, les conditions d'exécution et les critères d'acceptation de ces essais.
ISO 18278-1:2015 specifies procedures for assessing the generic weldability for resistance welding of uncoated and coated metals. It is assumed for this and other linked standards that their application is entrusted to appropriately trained, skilled, and experienced personnel. For the quality of welded structures, the relevant part of ISO 14554 is applicable. The specification of procedures is to follow guidelines as in ISO 15609‑5. The purpose of the tests are to a) compare the metallurgical weldability of different metals, b) assess the weldability of differing component designs, e.g. dimensional configuration, stack-up, projection geometry, etc., c) investigate the effect of changes in welding parameters such as welding current, weld time, electrode force or complex welding schedules including pulse welding, current stepping etc. on weldability, and/or d) compare the performance of resistance welding equipment. Precise details of the test procedure to be used will depend on which aspect of items a) to d) will be evaluated relative to the welding result obtained.
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